EMPLOYEE BENEFIT PLANS - NET PENSION EXPENSE (Details) - Qualified Defined Benefit - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2026	Sep. 30, 2025	Sep. 30, 2026	Sep. 30, 2025
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) [Abstract]
Service cost	$ 8	$ 7	$ 22	$ 21
Interest cost	31	33	90	98
Expected return on assets	38	37	113	111
Recognized actuarial loss	0	(3)	(2)	(9)
Income Statement Location [Axis]: us-gaap:LaborAndRelatedExpense
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) [Abstract]
Net pension expense	8	7	22	21
Income Statement Location [Axis]: us-gaap:NonoperatingIncomeExpense
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) [Abstract]
Net pension expense	$ (7)	$ (1)	$ (21)	$ (4)